CN111440498A - High-hardness single-component water-based paint and preparation method thereof - Google Patents
High-hardness single-component water-based paint and preparation method thereof Download PDFInfo
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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Abstract
The invention relates to a water-based industrial coating, in particular to a high-hardness single-component water-based coating and a preparation method thereof, wherein the high-hardness single-component water-based coating comprises water-based resin, water-based emulsion, a drier, a conventional assistant, a neutralizer, pigment, filler, deionized water, a thickener and a solvent; the preparation method has the advantages of simple preparation process, easy operation, low production cost and improvement of working efficiency.
Description
Technical Field
The invention relates to a water-based industrial coating, in particular to a water-based single-component coating which has high hardness, and a paint film has strong adhesive force and good salt spray resistance.
Background
The existing method for preparing the single-component coating usually uses a thinner as a diluent, the coating prepared by the method often contains toxic and harmful substances such as formaldehyde, toluene, xylene and the like, seriously pollutes the atmospheric environment, is not beneficial to protecting the life and property safety of human bodies, and meanwhile, the traditional water-based single-component coating has the characteristics of lower hardness which can reach HB at most, poorer salt spray resistance of a paint film and the like.
Therefore, there is a need to develop a high-hardness one-component water-based paint which is harmless to human body, has high hardness and good salt spray resistance.
Disclosure of Invention
In order to solve the problems of serious environmental pollution, low hardness, poor salt spray resistance of a paint film and the like of the single-component paint, the invention provides the high-hardness single-component water-based paint and the preparation method thereof.
The invention aims to provide a high-hardness single-component water-based paint, which is prepared by mixing a proper modified acrylic resin with a high-TG acrylic emulsion, wherein the modified acrylic resin has better salt spray resistance, the high-TG acrylic emulsion can improve the high-hardness characteristic of the paint after film formation, and proper pigment, filler and conventional auxiliary agents are matched to improve the hardness of a paint film, so that the hardness can be improved to H level, and the salt spray resistance of the paint film can be improved. The high-hardness single-component water-based paint comprises water-based resin, water-based emulsion, a drier, a conventional auxiliary agent, a neutralizer, a pigment, a filler, deionized water, a thickener and a solvent.
Further, the high-hardness single-component water-based paint comprises, by mass, 20-30 parts of water-based resin, 10-15 parts of water-based emulsion, 0-0.5 part of a drier, 1-4 parts of a conventional auxiliary agent, 0-0.3 part of a neutralizer, 5-10 parts of pigment, 15-30 parts of a filler, 25-35 parts of deionized water, 0-1 part of a thickener and 2-4 parts of a solvent.
Further, the pH value of the water-based resin is 7-9, the non-volatile matter is 72 +/-2%, and the density is 1.02g/cm2Brown viscous water-based modified acrylic resin.
Further, the conventional auxiliary agents comprise a dispersing agent, a water-based organic silicon defoaming agent, a flatting agent and a base material wetting agent;
calculated by taking 1 part of conventional auxiliary agent as a base part by weight, 0.4-2 parts of dispersing agent, 0.2-0.5 part of water-based organic silicon defoaming agent, 0.2-0.7 part of flatting agent and 0.2-0.8 part of base material wetting agent.
Further, the neutralizing agent is N, N-dimethylethanolamine.
Further, the pigment is carbon black pigment or titanium white pigment.
Further, the solvent is a mixture of ethylene glycol monobutyl ether and alcohol ester-12, and the mass parts of the ethylene glycol monobutyl ether are as follows: the alcohol ester-12 is 1:1.
Further, the filler is a mixed compound of barium sulfate and ferrophosphorus powder, and the compound proportion is that the barium sulfate is mixed by the following components in parts by mass: the ratio of the ferrophosphorus powder is 1:1-1: 2.
Further, the thickening agent is any one or the combination of two of polyurethane associative rheological additives or alkali thickening additives.
Furthermore, the water-based emulsion is water-based acrylic emulsion, the TG value is 68 ℃, and the water-based acrylic emulsion can quickly improve the film forming speed of a paint film and has better water resistance and salt spray resistance.
The invention also aims to provide a preparation method of the high-hardness single-component water-based paint, which comprises the following specific steps in parts by mass: the high-hardness single-component water-based paint comprises 20-30 parts of water-based resin, 10-15 parts of water-based emulsion, 0-0.5 part of drier, 1-4 parts of conventional auxiliary agent, 0-0.3 part of neutralizer, 5-10 parts of pigment, 15-30 parts of filler, 25-35 parts of deionized water, 0-1 part of thickener and 2-4 parts of solvent;
calculated by taking 1 part of conventional auxiliary agent as a base part by weight, 0.4-2 parts of dispersing agent, 0.2-0.5 part of water-based organic silicon defoaming agent, 0.2-0.7 part of flatting agent and 0.2-0.8 part of base material wetting agent;
the preparation method comprises the following steps:
(1) respectively averagely dividing the neutralizer and the deionized water into two parts, namely a neutralizer A, a neutralizer B, deionized water A and deionized water B;
(2) sequentially adding deionized water A, a dispersing agent, a neutralizing agent A, a water-based organic silicon defoaming agent, a pigment and a filler into a container under a stirring state, keeping the rotating speed at 800r/min, and stirring for 20 minutes to obtain a mixture;
(3) transferring the mixture obtained in the step (2) into a grinder, grinding until the fineness is less than or equal to 20 mu m, and finishing grinding to obtain water slurry for later use;
(4) adding the aqueous resin into a new container, sequentially adding a neutralizer B, a drier, a solvent and deionized water B under a stirring state, fully and uniformly stirring at a rotation speed of 800r/min for 20 minutes, then adding the water slurry obtained in the step (3), and continuously and uniformly stirring to obtain a material;
(5) and (3) adding the water-based emulsion into the material obtained in the step (4), adding the base material wetting agent, the flatting agent and the thickening agent in a stirring state, uniformly mixing to obtain a material, stirring at the rotating speed of 1000r/min for 20 minutes, and thus obtaining the product.
The invention has the beneficial effects that:
1. the invention provides a high-hardness single-component water-based paint and a preparation method thereof, the high-hardness single-component water-based paint is prepared by selecting a proper modified acrylic resin and a high-TG-value water-based acrylic emulsion to be mixed and matched with a proper pigment, a filler and a conventional auxiliary agent, the film forming property is ensured, the film forming speed is improved, the drying speed is further improved, the hardness of the prepared finished paint is improved quickly, the salt spray resistance is good and reaches 400H, the hardness can be improved to H level, the surface drying speed is high, the stability is good, toxic and harmful substances such as formaldehyde, methylbenzene and dimethylbenzene are avoided, the pollution to the atmospheric environment is avoided, and the high-hardness single-component water-based paint is harmless to a human body, has good environmental protection performance and the.
2. The invention provides a preparation method of a high-hardness single-component water-based paint, which is simple and reduces the production cost, and the prepared single-component water-based paint has the characteristics of high hardness, high salt mist resistance and other resistance performances, no harm to human bodies, high environmental protection performance and the like, and the hardness can be improved to H level.
3. The invention provides a high-hardness single-component water-based paint, which is prepared by mixing a proper modified acrylic resin with a high-TG acrylic emulsion, wherein the modified acrylic resin has better salt spray resistance, the high-TG acrylic emulsion can improve the high-hardness characteristic of the paint after film formation, and proper pigment, filler and conventional auxiliary agents are matched to improve the hardness of a paint film, so that the hardness can be improved to be more than H, and meanwhile, the salt spray resistance of the paint film can be improved, so that the salt spray resistance and other performances of the paint film are greatly improved.
4. When the water-based modified acrylic resin is matched with the water-based acrylic emulsion for use, the pH value is adjusted by the neutralizing agent to ensure that a mixed system can be kept in a stable state, and the water-based modified acrylic resin can be stored for a long time and can be normally used; the thickening agent adjusts the viscosity of the coating, thereby facilitating construction; the hardness and the salt spray resistance are improved by using hard fillers such as ferrophosphorus powder and the like.
5. When the water-based modified acrylic resin is matched with the water-based acrylic emulsion for use, the pH value is adjusted by the neutralizing agent to ensure that a mixed system can be kept in a stable state, and the water-based modified acrylic resin can be stored for a long time and can be normally used; the thickening agent adjusts the viscosity of the coating, thereby facilitating construction; the hardness and the salt spray resistance are improved by using hard fillers such as ferrophosphorus powder and the like;
6. the invention provides a high-hardness single-component water-based paint, the paint obtained by compounding and matching the raw materials in the application has good hardness, good stability and good salt spray resistance, and is lack of water-based modified acrylic resin and water-based acrylic emulsion, so that the obtained paint has poor salt spray resistance, low hardness and low surface drying speed; the lack of a drier affects the drying rate of the product; the absence of N, N-dimethylethanolamine and thickener affects the stability of the coating.
The specific implementation mode is as follows:
for better understanding of the present invention, the technical solution of the present invention will be described in detail with specific examples, but the present invention is not limited thereto.
The raw materials used in the invention are all commercial products.
The pH value of the water-based resin is 7-9, the non-volatile component is 72 +/-2 percent, and the density is 1.02g/cm2Brown viscous water-based modified acrylic resin.
The water-based emulsion is water-based acrylic emulsion, and the TG value is 68 ℃;
the neutralizer is N, N-dimethylethanolamine;
the pigment is carbon black pigment or titanium dioxide pigment;
the thickening agent is any one or the combination of two of polyurethane associative rheological additive or alkali thickening additive;
example 1
A preparation method of a high-hardness single-component water-based paint comprises the following specific steps of: the high-hardness single-component water-based paint comprises 20 parts of water-based modified acrylic resin, 10 parts of water-based acrylic emulsion, 0.3 part of a drier, 1.8 parts of a conventional auxiliary agent (the conventional auxiliary agent comprises 1 part of a dispersing agent, 0.2 part of a water-based organic silicon defoaming agent, 0.3 part of a flatting agent and 0.3 part of a base material wetting agent), 0.3 part of N, N-dimethyl ethanolamine, 5 parts of carbon black pigment, 30 parts of a filler, 25 parts of deionized water, 0.2 part of a polyurethane associative rheological auxiliary agent and 2 parts of a solvent;
the solvent is a mixture of ethylene glycol monobutyl ether and alcohol ester-12, and the mass parts of the ethylene glycol monobutyl ether are as follows: alcohol ester-12 is 1: 1;
the filler is a mixed compound of barium sulfate and ferrophosphorus powder, and the compound proportion is as follows by mass parts: the ratio of the ferrophosphorus powder to the ferrophosphorus powder is 1: 1;
the preparation method comprises the following steps:
(1) respectively averagely dividing N, N-dimethylethanolamine and deionized water into two parts, namely N, N-dimethylethanolamine A, N, N-dimethylethanolamine B, deionized water A and deionized water B;
(2) sequentially adding deionized water A, a dispersing agent, N-dimethylethanolamine A, a water-based organic silicon defoaming agent, carbon black pigment and a filler into a container under a stirring state, keeping the rotating speed at 800r/min, and stirring for 20 minutes to obtain a mixture;
(3) transferring the mixture obtained in the step (2) into a grinder, grinding until the fineness is less than or equal to 20 mu m, and finishing grinding to obtain water slurry for later use;
(4) adding the water-based modified acrylic resin into a new container, sequentially adding N, N-dimethylethanolamine B, a drier, a solvent and deionized water B under stirring, fully and uniformly stirring at the rotating speed of 800r/min for 20 minutes, then adding the water slurry obtained in the step (3), and continuously and uniformly stirring to obtain a material;
(5) and (3) adding the water-based acrylic emulsion into the material obtained in the step (4), adding the base material wetting agent, the flatting agent and the thickening agent in a stirring state, uniformly mixing to obtain a material, stirring at the rotating speed of 1000r/min for 20 minutes to obtain the product.
Example 2
A preparation method of a high-hardness single-component water-based paint comprises the following specific steps of: the high-hardness single-component water-based paint comprises 22 parts of water-based modified acrylic resin, 11 parts of water-based acrylic emulsion, 0.3 part of drier, 1.4 parts of conventional auxiliary agent (0.8 part of dispersing agent, 0.3 part of water-based organic silicon defoaming agent and 0.3 part of base material wetting agent), 0.1 part of N, N-dimethylethanolamine, 6 parts of titanium white pigment, 25 parts of filler, 30 parts of deionized water, 0.2 part of alkali thickening auxiliary agent and 3 parts of solvent;
the solvent is a mixture of ethylene glycol monobutyl ether and alcohol ester-12, and the mass parts of the ethylene glycol monobutyl ether are as follows: alcohol ester-12 is 1: 1;
the filler is a mixed compound of barium sulfate and ferrophosphorus powder, and the compound proportion is as follows by mass parts: the ratio of the ferrophosphorus powder to the ferrophosphorus powder is 1: 1;
the preparation method comprises the following steps:
(1) respectively averagely dividing N, N-dimethylethanolamine and deionized water into two parts, namely N, N-dimethylethanolamine A, N, N-dimethylethanolamine B, deionized water A and deionized water B;
(2) sequentially adding deionized water A, a dispersing agent, N-dimethylethanolamine A, a water-based organic silicon defoaming agent, titanium white pigment and a filler into a container under a stirring state, keeping the rotating speed at 800r/min, and stirring for 20 minutes to obtain a mixture;
(3) transferring the mixture obtained in the step (2) into a grinder, grinding until the fineness is less than or equal to 20 mu m, and finishing grinding to obtain water slurry for later use;
(4) adding the water-based modified acrylic resin into a new container, sequentially adding N, N-dimethylethanolamine B, a drier, a solvent and deionized water B under the stirring state, fully and uniformly stirring at the rotating speed of 800r/min for 20 minutes, then adding the water slurry obtained in the step (3), and continuously and uniformly stirring to obtain a material;
(5) and (3) adding the water-based acrylic emulsion into the material obtained in the step (4), adding the base material wetting agent and the thickening agent under a stirring state, uniformly mixing to obtain a material, stirring at the rotating speed of 1000r/min for 20 minutes, and thus obtaining the product.
Example 3
A preparation method of a high-hardness single-component water-based paint comprises the following specific steps of: the high-hardness single-component water-based paint comprises 24 parts of water-based modified acrylic resin, 12 parts of water-based acrylic emulsion, 0.3 part of drier, 2.3 parts of conventional auxiliary agent (1.3 parts of dispersing agent, 0.4 part of water-based organic silicon defoaming agent, 0.2 part of flatting agent and 0.4 part of base material wetting agent), 0.2 part of N, N-dimethyl ethanolamine, 8 parts of carbon black pigment, 25 parts of filler, 31 parts of deionized water and 4 parts of solvent;
the solvent is a mixture of ethylene glycol monobutyl ether and alcohol ester-12, and the mass parts of the ethylene glycol monobutyl ether are as follows: alcohol ester-12 is 1: 1;
the filler is a mixed compound of barium sulfate and ferrophosphorus powder, and the compound proportion is as follows by mass parts: the ratio of the ferrophosphorus powder to the ferrophosphorus powder is 1: 2;
the preparation method comprises the following steps:
(1) respectively averagely dividing N, N-dimethylethanolamine and deionized water into two parts, namely N, N-dimethylethanolamine A, N, N-dimethylethanolamine B, deionized water A and deionized water B;
(2) sequentially adding deionized water A, a dispersing agent, N-dimethylethanolamine A, a water-based organic silicon defoaming agent, carbon black pigment and a filler into a container under a stirring state, keeping the rotating speed at 800r/min, and stirring for 20 minutes to obtain a mixture;
(3) transferring the mixture obtained in the step (2) into a grinder, grinding until the fineness is less than or equal to 20 mu m, and finishing grinding to obtain water slurry for later use;
(4) adding the water-based modified acrylic resin into a new container, sequentially adding N, N-dimethylethanolamine B, a drier, a solvent and deionized water B under stirring, fully and uniformly stirring at the rotating speed of 800r/min for 20 minutes, then adding the water slurry obtained in the step (3), and continuously and uniformly stirring to obtain a material;
(5) and (3) adding the water-based acrylic emulsion into the material obtained in the step (4), adding the base material wetting agent and the flatting agent in a stirring state, uniformly mixing to obtain a material, stirring at the rotating speed of 1000r/min for 20 minutes, and thus obtaining the product.
Example 4
A preparation method of a high-hardness single-component water-based paint comprises the following specific steps of: the high-hardness single-component water-based paint comprises 26 parts of water-based modified acrylic resin, 13 parts of water-based acrylic emulsion, 0.4 part of drier, 2.8 parts of conventional auxiliary agent (1.8 parts of dispersing agent, 0.4 part of water-based organic silicon defoaming agent, 0.2 part of flatting agent and 0.4 part of base material wetting agent), 8 parts of titanium white pigment, 22 parts of filler, 23 parts of deionized water, 0.8 part of polyurethane associated rheological auxiliary agent and 3 parts of solvent;
the solvent is a mixture of ethylene glycol monobutyl ether and alcohol ester-12, and the mass parts of the ethylene glycol monobutyl ether are as follows: alcohol ester-12 is 1: 1;
the filler is a mixed compound of barium sulfate and ferrophosphorus powder, and the compound proportion is as follows by mass parts: the ratio of the ferrophosphorus powder to the ferrophosphorus powder is 1: 1.5;
the preparation method comprises the following steps:
(1) respectively averagely dividing the deionized water into two parts, namely deionized water A and deionized water B;
(2) sequentially adding deionized water A, a dispersing agent, a water-based organic silicon defoaming agent, a carbon black pigment and a filler into a container under a stirring state, keeping the rotating speed at 800r/min, and stirring for 20 minutes to obtain a mixture;
(3) transferring the mixture obtained in the step (2) into a grinder, grinding until the fineness is less than or equal to 20 mu m, and finishing grinding to obtain water slurry for later use;
(4) adding the waterborne modified acrylic resin into a new container, sequentially adding a drier, a solvent and deionized water B under stirring, fully and uniformly stirring at the rotating speed of 800r/min for 20 minutes, adding the water slurry obtained in the step (3), and continuously and uniformly stirring to obtain a material;
(5) and (3) adding the water-based acrylic emulsion into the material obtained in the step (4), adding the base material wetting agent, the flatting agent and the thickening agent in a stirring state, uniformly mixing to obtain a material, stirring at the rotating speed of 1000r/min for 20 minutes to obtain the product.
Comparative example 1 was compared with example 1 except that in comparative example 1, 30 parts of an aqueous resin was added without adding an aqueous emulsion, and the other components and preparation method were the same.
Comparative example 2
Comparative example 2 was compared with example 1 except that in comparative example 2, 30 parts of an aqueous emulsion was added without adding an aqueous resin, and the other components and preparation method were the same.
Comparative example 3
Comparative example 3 was compared with example 1 except that the amount of the aqueous resin added in comparative example 3 was 10 parts, the amount of the aqueous emulsion was 5 parts, and the other components and the preparation method were the same.
Comparative example 4
Comparative example 4 was compared with example 1 except that 30 parts of barium sulfate was added to comparative example 4 and the other components and preparation method were the same.
Comparative example 5
Comparative example 5 is compared with example 1 except that only 30 parts of powdered ferrophosphorus powder is added to comparative example 5 and the other components and preparation method are the same.
Comparative example 6
Comparative example 6 was compared to example 1 except that the siccative was absent from comparative example 6 and the other components and preparation were the same.
The products of examples 1 to 4 and comparative examples 1 to 6 were subjected to product performance index tests:
table 1: product performance index tests in examples 1 to 4 and comparative examples 1 to 6:
as can be seen from table 1 above, the high-hardness single-component water-based coating is obtained by mixing and splicing a suitable water-based modified acrylic resin and a high-TG water-based acrylic emulsion and matching with a suitable pigment, a filler and an auxiliary agent, and the hardness of the finished coating is increased quickly, the hardness can be increased to H level, the salt spray resistance is good, the salt spray resistance is up to 400H, the surface drying speed is high, and the stability is good;
when the waterborne modified acrylic resin is matched with the waterborne acrylic emulsion for use, the pH value is adjusted by the neutralizing agent, so that the mixed system can be kept in a stable state, and the mixed system can be stored for a long time and can be normally used; the thickening agent adjusts the viscosity of the coating, thereby facilitating construction; the hardness and the salt spray resistance are improved by using hard fillers such as ferrophosphorus powder and the like;
the coating obtained by compounding and matching the raw materials in the application has good hardness, good stability and good salt spray resistance, and is lack of aqueous modified acrylic resin and aqueous acrylic emulsion, so that the obtained coating has poor salt spray resistance, low hardness and slow surface drying speed; the lack of a drier affects the drying rate of the product; the absence of N, N-dimethylethanolamine and thickener affects the stability of the coating.
For the products obtained in example 1 of the present application, product performance index tests were performed on control groups 7 to 9 (wherein the control groups 7 to 9 were commercially available products of 3 existing companies, the control group 7 was obtained from tomb-wang-run petrochemical company ltd, the product name was water-emulsion type waterproof coating one-component polyurethane waterproof coating, the control group 8 was obtained from shanghai mien shi chemical building materials ltd, the product name was epoxy primer N L-510 for water-based electromechanical devices, the control group 9 was obtained from beijing eismer science ltd, the product name was TH-21 high-hardness fingerprint-resistant rust-proof transparent water-based anticorrosive coating):
table 2: the products of example 1, control 7-9 were tested for performance index:
| performance index | Example 1 | Control group 7 | Control group 8 | Control group 9 |
| Hardness of | H | HB | B | B |
| Surface drying speed/25 deg.C, min | 18 | 30 | 35 | 32 |
| Salt spray resistance | 420 | 240 | 200 | 220 |
| Impact resistance/cm | 50 | 50 | 50 | 50 |
| Heat storage effect (50 ℃ X7d) | Good effect | Good effect | Good effect | Good effect |
As can be seen from Table 2: the performance of the coating is obviously superior to that of other brands sold in the market, and particularly, the hardness, surface drying speed and salt spray resistance of the coating are greatly improved compared with those of products of other manufacturers. Therefore, the modified acrylic resin can improve the hardness, the surface drying speed, the salt spray resistance and other product performances by mixing with the high-TG acrylic emulsion and then matching with a proper filler.
The raw materials listed in the invention, the values of the upper limit and the lower limit and the interval of the raw materials, and the values of the upper limit and the lower limit and the interval of the process parameters can all realize the invention, and the examples are not listed.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (10)
1. The high-hardness single-component water-based paint is characterized by comprising water-based resin, water-based emulsion, a drier, a conventional auxiliary agent, a neutralizer, pigment, filler, deionized water, a thickener and a solvent.
2. The high-hardness single-component water-based paint as claimed in claim 1, wherein: the high-hardness single-component water-based paint comprises, by mass, 20-30 parts of water-based resin, 10-15 parts of water-based emulsion, 0-0.5 part of a drier, 1-4 parts of a conventional auxiliary agent, 0-0.3 part of a neutralizer, 5-10 parts of a pigment, 15-30 parts of a filler, 25-35 parts of deionized water, 0-1 part of a thickener and 2-4 parts of a solvent.
3. The high-hardness single-component water-based paint as claimed in claim 1, which is characterized in that: the pH value of the water-based resin is 7-9, the non-volatile component is 72 +/-2 percent, and the density is 1.02g/cm2Brown viscous water-based modified acrylic resin.
4. The high-hardness single-component water-based paint as claimed in claim 1, which is characterized in that: the conventional auxiliary agents are a dispersing agent, a water-based organic silicon defoaming agent, a flatting agent and a base material wetting agent;
calculated by taking 1 part of conventional auxiliary agent as a base part by weight, 0.4-2 parts of dispersing agent, 0.2-0.5 part of water-based organic silicon defoaming agent, 0.2-0.7 part of flatting agent and 0.2-0.8 part of base material wetting agent.
5. The high-hardness single-component water-based paint disclosed in claim 1 is characterized in that: the neutralizer is N, N-dimethylethanolamine.
6. The high-hardness single-component water-based paint as claimed in claim 1, wherein: the water-based emulsion is water-based acrylic emulsion, and the TG value is 68 ℃.
7. The high-hardness single-component water-based paint as claimed in claim 1, wherein: the solvent is a mixture of ethylene glycol monobutyl ether and alcohol ester-12, and the mass parts of the ethylene glycol monobutyl ether are as follows: the alcohol ester-12 is 1:1.
8. The high-hardness single-component water-based paint as claimed in claim 1, wherein: the filler is a mixed compound of barium sulfate and ferrophosphorus powder, and the compound proportion is as follows by mass parts: the ratio of the ferrophosphorus powder is 1:1-1: 2;
the pigment is carbon black pigment or titanium dioxide pigment.
9. The high-hardness single-component water-based paint as claimed in claim 1, wherein: the thickening agent is any one or the combination of two of polyurethane associated rheological additives or alkali thickening additives.
10. The method for preparing a high-hardness one-component water-based paint according to any one of claims 1 or 2, wherein: the method comprises the following specific steps of: the high-hardness single-component water-based paint comprises 20-30 parts of water-based resin, 10-15 parts of water-based emulsion, 0-0.5 part of drier, 1-4 parts of conventional auxiliary agent, 0-0.3 part of neutralizer, 5-10 parts of pigment, 15-30 parts of filler, 25-35 parts of deionized water, 0-1 part of thickener and 2-4 parts of solvent;
calculated by taking 1 part of conventional auxiliary agent as a base part by weight, 0.4-2 parts of dispersing agent, 0.2-0.5 part of water-based organic silicon defoaming agent, 0.2-0.7 part of flatting agent and 0.2-0.8 part of base material wetting agent;
the preparation method comprises the following steps:
(1) respectively averagely dividing the neutralizer and the deionized water into two parts, namely a neutralizer A, a neutralizer B, deionized water A and deionized water B;
(2) sequentially adding deionized water A, a dispersing agent, a neutralizing agent A, a water-based organic silicon defoaming agent, a pigment and a filler into a container under a stirring state, keeping the rotating speed at 800r/min, and stirring for 20 minutes to obtain a mixture;
(3) transferring the mixture obtained in the step (2) into a grinder, grinding until the fineness is less than or equal to 20 mu m, and finishing grinding to obtain water slurry for later use;
(4) adding the aqueous resin into a new container, sequentially adding a neutralizer B, a drier, a solvent and deionized water B under a stirring state, fully and uniformly stirring at a rotation speed of 800r/min for 20 minutes, then adding the water slurry obtained in the step (3), and continuously and uniformly stirring to obtain a material;
(5) and (3) adding the water-based emulsion into the material obtained in the step (4), adding the base material wetting agent, the flatting agent and the thickening agent in a stirring state, uniformly mixing to obtain a material, stirring at the rotating speed of 1000r/min for 20 minutes to obtain the product.
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Application publication date: 20200724 |